Window screen



Patented July 1, 1941 UNITED STATES PATENT OFFICE 1 Claim.

This invention relates to window screens, the general object of the invention being to provide a screen having bars at its ends with means whereby the bars can be easily and quickly inserted in a part of a window frame with the screen held in stretched condition for closing a part of the frame, with means whereby when the screen has been taken from the frame the bars with the screen can be rolled into'a small compact bundle.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts to be hereinafter fully described, illustrated in the accompanying drawing and specifically pointed out in the appended claim.

In describing the invention in detail, reference will be had to the accompanying drawing wherein like characters denote like or corresponding parts throughout the several views, and in which:

Figure 1 is a fragmentary view of the outer portion of a window frame showing the invention applied thereto.

Figure 2 is a section on the line 2--2 of Figure 1.

Figure 3 is a view showing the screen in rolled position when not in use.

Figure 4 is a detail view showing how the blind strip is cut for insertion of a part of the invention.

As shown in the drawing the letter A indicates a part of a window frame and the letter B the sashes thereof, while the blind strips are shown at 2'. In carrying out the invention I provide a screen I of a width to fit the frame and to overlap at its side edges the blind strips 2' and of a length to cover the space left open by the opening of a sash. The drawing shows the screen associated with a lower sash but it will, of course,

be understood that the screen can be used with an upper sash if desired. The screen I has its ends fastened to wooden bars 3' and the strips 2 have parts cut away at their lower ends and the lower ends of the remaining parts are beveled as shown at M in Figure 1. The lower bar 3 has its upper edge beveled so that it can engage the beveled lower ends of the strips 2.

Plate like strips iii are fastened to the outer edge of the window silland the lower bar 3' abuts these plates as shown.

Spring plates it are connected to the lower edge of the upper bar 3' adjacent its ends and blocks I6 are placed in recesses formed by cutting away the strips 2' adjacent the lower end of the upper sash so that the springs will press the upper bar 3' upwardly and thus apply tension to the screen. Angle clips l8 are fastened to outer portions of the side parts of the window frame and abuts the ends of the upper bar 3 to hold this bar in position while it is being pressed upwardly by the springs Hi.

In inserting the screen assemblyin the window the bar 3' is placed in position with its ends passing under the lower ends of the strips 2' and then the upper bar is pressed between the plates [8 and the blocks I! with the springs [6 bearing against the upper ends of the blocks H which press the bar 3' upwardly and thus apply tension to the screen. By providing these blocks l'l they can be adjusted upwardly if the springs 16 should become Weak through wear or whenever it is desired to increase the pressure of the springs.

It is thought from the foregoing description that the advantages and novel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction and in the combination and arrangement of the several parts provided that such changes fall within the scope of the appended claim.

Having described the invention, what is claimed as new is:

A window screen for a window frame having blind strips at its side Walls, said screen comprising a screen part, upper and lower bars connected to the upper and lower ends of the screen part, said blind strips having their lower ends cut away to form recesses between said lower ends and the sill of the frame, said lower ends of the strips beveling inwardly and. upwardly, the ends of the lower bar being beveled at their upper edges to engage the bevels of the strips, a plate connected with the outer edge of the sill and extending over the outer face of the lower bar, said strips having intermediate portions cut away to provide recesses, blocks fitting in the last-mentioned recesses and having flat upper ends, screws for holding the blocks to side wall parts of the frame and leaf springs connected to the under edge of the top bar and having their outer ends offset downwardly to engage the upper ends of the blocks to force the top bar up- 

